亭子口升船机承船厢主纵梁焊接变形分析与控制

Deformation Analysis and Control in Welding of Tingzikou Ship Lift Chamber's Main Longitudinal Beam Structure

亭子口升船机是我国现今最大尺寸的钢丝绳卷扬全平衡垂直提升式升船机。针对升船机承船厢主纵梁焊接变形大、尺寸精度控制难的问题,采用固有应变法对主纵梁不同焊接顺序的变形量进行了计算,获得了该结构的收缩补偿量。通过增加加强梁、内外腹板间的肋板和垂向拘束梁,提高了该结构的整体刚度,使主纵梁结构的变形得到有效控制,减少了焊接变形的现场修正工作。

The Tingzikou＇s ship lift is known as the biggest full balanced vertical ship elevator with steel cable winding method in our country. Aiming at the problem of large deformation and difficult control of dimension precision in the welding of ship lift chamber＇s main longitudinal beam structure, the deformation of the main longitudinal beam structure with different welding sequences was calculated by using the inherent strain method, and the shrinkage compensation was obtained. By increasing the reinforced beam, ribs and vertical restraint beams between the internal and external webs, the overall stiffness of the structure is improved, and the welding deformation is controlled efficiently.Thus the site repairement work is decreased.